The Guardian maintains an excellent directory of thinktanks
http://politics.guardian.co.uk/thinktanks/

Find out your constituency and MP at
http://www.locata.co.uk/commons/

Find out more about your Labour MP and how to contact them
http://www.labour.org.uk/membersofparliament

Find out who your local councillors are – as well as information on the performance of public services in your area:
http://www.upmystreet.com

See Prime Minister’s questions, see the latest news from the government:
http://www.pm.gov.uk

What has the government done in your area – information to challenge the cynics!
http://www.labour.org.uk/inyourarea/

A useful aid in tracking a bill through the Parliamentary sausage factory
http://www.epolitix.com/default.asp?body=/data/legislation/

News sources – a full list of national newspapers and their sites
http://www.journalismuk.co.uk/links.htm

Who said what?  Hansard’s online search engine for parliamentary debates
http://www.publications.parliament.uk/cgi-bin/dialogserverTSO?DB=ukparl&FILE=searchJS&DATETYPE=ANY